Summary
In this chapter, we updated the Azure backend service we created in the previous chapter with Facebook-provided authentication. We also updated the API data service in the TripLog app, to authenticate its HTTP API requests with a user-specific auth token provided by Azure App Service authentication, given a valid Facebook access token. Finally, we added a sign-in page, the ability to sign out, and updated the app to automatically route the user to the sign-in page if an auth token isn't found in local settings, or if a 401 response is ever received from the API. In the next chapter, we'll create unit tests for our TripLog app.
